Swivel roller



FIG. 1 is a front view of a swivel roller showing the new design according to a first embodiment;

FIG. 2 is a left side view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a front view of a swivel roller illustrating a second embodiment of the design;

FIG. 8 is a left side view thereof;

FIG. 9 is a bottom view thereof;

FIG. 10 is a top view thereof;

FIG. 11 is a rear view thereof;

FIG. 12 is a right side view thereof;

FIG. 13 is a front view of a swivel roller illustrating a third embodiment of the design;

FIG. 14 is a left side view thereof;

FIG. 15 is a bottom view thereof;

FIG. 16 is a top view thereof;

FIG. 17 is a rear view thereof; and,

FIG. 18 is a right side view thereof. 

The ornamental design for the swivel roller, as shown and described. 